Tren A is a better choice. If it does not agree with you then you can drop it and it's finished with you quick. Since you have another fast estered test running i would run Tren A. eod religiously.
I've only ever ran Tren Ace. Its in quick its out quick. But then again I am a fan of shorter esters in general prop, ace anything that is quick. If you do react badly to the compound you can discontinue and its gone within 3-5 days with E it'll take 2-3 weeks.
But like Oldfella said if your Injecting ED or EOD already why not just throw it in the same dart? It would be the same amount of pins, plus you'll get the badass effects of the tren sooner. Thats a sick compound have fun.